Products for human agency.

Sentinel is a focused software studio building products that restore trust, clarity, and human agency in daily life.

The thesis is simple: build great software for the people who genuinely need it, keep incentives clean, and ship products that make them more capable — not more captured.

Properties

Three properties

Property 01 / 03

Jackdaw

Forms filled, paperwork done, reports written — by an AI that finally knows you.

Closed beta
jackdaw.so

An automatically updated, source-backed wiki for your life and work — shared by people and AI agents, with durable changes kept human-approved.

Enter
Property 02 / 03

Nova

A concluded news experiment — and ideas we may come back to.

Concluded experimentNova News

Nova News was an experiment in a healthier way to read the news — coverage with citations and source diversity, no spin, no engagement bait. We built it, learned what we needed to, and wound it down to focus on Jackdaw.

See it at novanews.app
Concept

Nova Share

Share life with the people in it. No algorithm, no strangers.

Concept

Nova Browser

Browse without being browsed. Trackers and ads blocked by default.

Property 03 / 03

Hyperion

More when it’s ready.

HyperionStealth

One product. Details when we’re ready.

Operating model

Subscription-first. Users are customers, not inventory.

Build philosophy

Pick meaningful problems. Design around incentives. Ship what compounds.

Stance

No ads. No surveillance. No selling your data. Ever.

Sentinel Dev — products for human agency